Treatment of migraine

ABSTRACT

The present disclosure provides methods for the acute treatment of migraine with or without aura, comprising the administration of ubrogepant. In particular, the present disclosure provides methods for the acute treatment of migraine in patients having hepatic impairment; in patients with renal impairment; and in patients concurrently taking CYP3A4 modulators or BCRP and/or P-gp only inhibitors.

FIELD

The present disclosure is related to medicaments and methods for treating migraine. In particular, the present disclosure is related to medicaments and methods for the acute treatment of migraine with or without aura.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of U.S. Provisional Application No. 63/129,379, filed Dec. 22, 2020, the disclosure of which is incorporated by reference herein in its entirety.

BACKGROUND

Migraine is a highly prevalent, severe, and disabling neurological condition with a significant unmet need for effective treatments. (Holland, P. R. & Goadsby, P. J. Neurotherapeutics (2018). Migraine represents a significant burden to patients and society. There remains a need for optimized and targeted methodologies and dosing regimens to treat migraines.

CGRP (calcitonin gene-related peptide) is a naturally occurring 37-amino acid peptide that is generated by tissue-specific processing of calcitonin messenger RNA and is widely distributed in the central and peripheral nervous system. CGRP is a potent vasodilatory neurotransmitter believed to play a key role in migraine pathophysiology.

The initial clinical validation of the CGRP target was provided by Boehringer Ingelheim in 2003 with the report that an IV formulation comprising olcegepant was efficacious in the acute treatment of migraine and the mechanism was confirmed by a study using telcagepant (a CGRP antagonist) in an oral formulation. The first clinically tested CGRP antagonist, olcegepant, was based on a dipeptide backbone, had a high molecular weight, and was not orally bioavailable. Later, a number of orally-acting CGRP antagonists were advanced to clinical trials, including MK-3207 and telcagepant. However, elevated liver enzyme levels were observed for MK-3207 and telcagepant, leading to the discontinuation of both programs.

It would thus be advantageous to develop effective methods of treating acute migraine with CGRP antagonists.

SUMMARY

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient with severe hepatic impairment, where the method involves administering 50 mg of ubrogepant to a patient having a Child-Pugh score/classification of Child-Pugh Class C. In embodiments, the patient may optionally be administered a second 50 mg dose of ubrogepant at least 2 hours after the first 50 mg dose. In embodiments, the second dose of ubrogepant may be administered between 2-24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient with severe renal impairment, the method comprising administering a first 50 mg dose of ubrogepant to a patient, wherein the patient’s estimated creatinine clearance as determined using the Cockcroft-Gault equation is 15-29 mL/min. In embodiments, an optional second dose of 50 mg ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the optional second dose of ubrogepant is administered between 2-24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients undergoing treatment with a moderate CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing treatment with the moderate CYP3A4 inhibitor. In embodiments, the 50 mg dose of ubrogepant is the only dose of ubrogepant administered to the patient in a 24 hour period (i.e., the maximum amount of ubrogepant administered to the patient in a 24-hour period is 50 mg).

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients undergoing treatment with a weak CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to the patient taking the weak CYP3A4 inhibitor. In embodiments, an optional second 50 mg dose of ubrogepant may be administered to the patient at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is administered between 2 and 24 hours after the first dose of ubrogepant. In embodiments, the maximum dosage of ubrogepant in a 24-hour period for a patient taking a weak CYP3A4 inhibitor is 100 mg.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient undergoing treatment with a weak or moderate CYP3A4 inducer, the method comprising administering 100 mg ubrogepant to the patient taking the weak or moderate CYP3A4 inducer. In embodiments, an optional second 100 mg dose of ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the optional second dose is administered between 2 and 24 hours after the first dose of ubrogepant. In embodiments, the maximum dosage of ubrogepant in a 24-hour period for a patient taking a weak or moderate CYP3A4 inducer is 200 mg.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient undergoing concurrent treatment with a BCRP and/or P-gp only inhibitor, the method comprising administering 50 mg ubrogepant to said patient taking a BCRP and/or P-gp only inhibitor. In embodiments, an optional second 50 mg dose of ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the optional second dose is administered between 2-24 hours after the first dose of ubrogepant. In embodiments, the maximum dosage of ubrogepant in a 24-hour period for a patient taking a BCRP and/or P-gp only inhibitor is 100 mg.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the mean plasma concentration-time profiles following a single oral dose administration of 100 mg ubrogepant in participants with mild, moderate, or severe hepatic impairment and in participants with normal hepatic function as a linear scale.

FIG. 2 shows the mean plasma concentration-time profiles following single oral dose administration of 100 mg ubrogepant in participants with mild, moderate, or severe hepatic impairment and in participants with normal hepatic function as a semilogarithmic scale. The rate and extent of ubrogepant systemic exposure was significantly higher in participants with severe hepatic impairment compared to patients with normal hepatic function; moderately higher in participants with moderate hepatic impairment; and slightly higher in participants with mild hepatic impairment.

FIG. 3 shows plasma concentration-time profiles of single-dose ubrogepant 20 g alone and following coadministration with multiple doses of ketoconazole 400 mg, a strong CYP3A4 and P-gp inhibitor.

FIG. 4 shows plasma concentration-time profiles of single-dose ubrogepant 20 mg following administration alone and co-administered with multiple-dose verapamil 240 mg, a moderate CYP3A4 inhibitor.

FIG. 5 shows the plasma concentration-time profiles of ubrogepant 100 mg alone and following co-administration with rifampin 600 mg, a strong CYP3A4 and P-gp inducer.

FIG. 6 shows the percentage of patients achieving pain freedom within 2 hours following treatment with ubrogepant in two clinical studies.

FIG. 7 shows the percentage of patients achieving Most Bothersome Symptom (MBS) freedom within 2 hours following treatment with ubrogepant in two clinical studies.

The mean concentration-time profiles for plasma ubrogepant after single-dose administration of the 100 mg ubrogepant tablet under fed and fasted conditions are shown in FIG. 8 (linear scale) and FIG. 9 (semilogarithmic scale).

DETAILED DESCRIPTION

Ubrelvy® (ubrogepant) is believed to have utility in treating patients suffering from acute migraine attack. Ubrogepant has the following structure:

Ubrogepant is also known as (3′S)-N-((3S,5S,6R)-6-methyl-2-oxo-5-phenyl-1-(2,2,2-trifluoroethyl)piperidin-3-yl)-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3- b]pyridine]-3-carboxamide. Ubrogepant is a calcitonin gene-related peptide (CGRP) receptor antagonist that is primarily metabolized by cytochrome P450 3A4 (CYP3A4) and is a P-glycoprotein substrate.

The elimination half-life of ubrogepant is approximately 5-7 hours. The mean apparent oral clearance (CL/F) of ubrogepant is approximately 87 L/hr. Ubrogepant is excreted mainly through the biliary/fecal route, while the renal route is a minor route of elimination. Following single dose administration of [¹⁴C]-ubrogepant to healthy male subjects, 42% and 6% of the dose was recovered as unchanged ubrogepant in feces and urine, respectively.

Following oral administration of ubrogepant, ubrogepant is absorbed with peak plasma concentrations at approximately 1.5 hours. When ubrogepant is administered with a high-fat meal, the time to maximum plasma concentration is delayed by 2 hours and results in a 22% reduction in C_(max) with no change in AUC. In clinical studies, ubrogepant was administered without regard to food.

Plasma protein binding of ubrogepant is 87% in vitro. The mean apparent central volume of distribution of ubrogepant (V/L) after single dose oral administration is approximately 350 L.

Methods of Treating Acute Migraine

In embodiments, the present disclosure provides for a method for the acute treatment of migraine (e.g., treatment of acute migraine) with or without aura. In embodiments, the method comprises administering 50 mg or 100 mg of ubrogepant. In embodiments, ubrogepant is taken orally with or without food. In embodiments, a second dose may be taken at least 2 hours after the initial dose, where the maximum dose in a 24 hour period is 200 mg. In embodiments, the second dose of ubrogepant is taken between 2-24 hours after the first dose of ubrogepant.

It will be understood that a patient may be administered a particular amount of ubrogepant (e.g., 50 mg or 100 mg), or may be administered a pharmaceutically acceptable salt of ubrogepant in an amount equivalent to that dose (e.g., a pharmaceutically acceptable salt of ubrogepant in an amount equivalent in potency to 50 mg of ubrogepant, or a pharmaceutically acceptable salt in an amount equivalent in potency to 100 mg of ubrogepant). Disclosure of a particular dose of ubrogepant also includes pharmaceutically acceptable salts of ubrogepant in an amount equivalent to that dose.

Methods of Treating Acute Migraine in Patients Having Hepatic Impairment

Ubrogepant is mainly metabolized by hepatic CYP isoenzymes, thus creating the potential that patients with varying degrees of hepatic impairment might achieve higher systemic concentrations of ubrogepant. The present disclosure provides methods of safely administering ubrogepant to patients having mild, moderate, or severe hepatic impairment for the treatment of acute migraine with or without aura.

In embodiments, the present disclosure provides methods of treating acute migraine with or without aura in patients with hepatic impairment. In embodiments, the hepatic impairment is pre-existing. “Hepatic impairment” is used in accordance with its standard meaning and can, in embodiments, refer to scoring based on the Child-Pugh Score of A, B, and C.

In patients with pre-existing mild (Child-Pugh Class A) or moderate (Child-Pugh Class B) hepatic impairment, it was determined that ubrogepant exposure was increased by 7% and 50%, respectively. In patients with severe (Child-Pugh Class C) hepatic impairment, it was determined that ubrogepant exposure was increased by 115%.

Accordingly, in embodiments, patients with severe hepatic impairment (Child-Pugh Class C) require a dose adjustment as compared to patients without severe hepatic impairment. In embodiments, the present disclosure provides a method of treating acute migraine with or without aura in patients with severe hepatic impairment, the method comprising administering 50 mg of ubrogepant to a patient having severe hepatic impairment (Child-Pugh Class C). In embodiments, ubrogepant is taken orally with or without food.

In patients with migraine, it is sometimes not sufficient to take a single dose of a migraine medication. For example, a patient may take a migraine medication, and still experience symptoms including pain, photophobia, phonophobia, nausea, or emesis after 2 hours, and may require additional treatment. It was determined that patients having severe hepatic impairment may take a second dose of ubrogepant at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is taken between 2 and 24 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is 50 mg.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients having mild hepatic impairment (Child-Pugh Class A), the method comprising administering 50 or 100 mg of ubrogepant. In embodiments, ubrogepant is taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken at least 2 hours after the initial dose, where the maximum dose in a 24 hour period is 200 mg. In embodiments, the second dose of ubrogepant is taken between 2 and 24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients having moderate hepatic impairment (Child-Pugh Class B, the method comprising administering 50 or 100 mg of ubrogepant. In embodiments, ubrogepant is taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken at least 2 hours after the initial dose, where the maximum dose in a 24 hour period is 200 mg. In embodiments, the second dose of ubrogepant is taken between 2 and 24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient having hepatic impairment, the method comprising first determining whether the patient has mild hepatic impairment (Child Pugh Class A), moderate hepatic impairment (Child Pugh Class B), or severe hepatic impairment (Child Pugh Class C). If the patient has mild or moderate hepatic impairment, the method further comprises administering 50 or 100 mg ubrogepant. In embodiments, ubrogepant may be taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken by the patient having mild or moderate hepatic impairment at least 2 hours after the initial dose. In embodiments, the second dose is taken between 2 and 24 hours after the initial dose. In embodiments, the second dose of ubrogepant is 50 or 100 mg. In embodiments, the maximum dose in a 24 hour period is 200 mg. If the patient has severe hepatic impairment, the method further comprises administering 50 mg ubrogepant to the patient. In embodiments, ubrogepant may be taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken by the patient having severe hepatic impairment at least two hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant administered to the patient having severe hepatic impairment is a 50 mg dose of ubrogepant. In embodiments, the second dose of ubrogepant is taken between 2 and 24 hours after the first dose of ubrogepant.

Methods of Treating Acute Migraine in Patients Having Renal Impairment

The renal route elimination is a minor excretion pathway for ubrogepant (<10%). Population pharmacokinetic analysis based on pooled data from clinical studies was used to evaluate the effect of renal impairment characterized based on estimated creatinine clearance (CLcr) using the Cockcroft-Gault (C-G) equation. Renal impairment did not reveal a significant difference in the pharmacokinetics of ubrogepant in patients with mild or moderate renal impairment (CLcr 30-89 mL/min) relative to those with normal renal function (CLcr >90 mL/min).

Accordingly, in embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients having mild or moderate renal impairment (CLcr 30-89 mL/min), the method comprising administering 50 or 100 mg of ubrogepant. In embodiments, ubrogepant is taken orally with or without food. In embodiments, a second dose of 50 or 100 mg of ubrogepant may be taken at least 2 hours after the initial dose, where the maximum dose in a 24 hour period is 200 mg.

However, in embodiments, dose adjustment is required in patients with severe renal impairment (CLcr 15-29 mL/min). In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients having severe renal impairment, the method comprising administering 50 mg of ubrogepant to a patient having severe renal impairment (CLcr 15-29 mL/min). In embodiments, ubrogepant is taken orally with or without food.

As discussed above, in some patients, a single dose of medication is not sufficient to address their migraine symptoms. That is, a patient may take a first dose of ubrogepant, and still experience some symptoms including pain, photophobia, phonophobia, nausea, or emesis after 2 hours, and may require additional treatment. In embodiments, the present disclosure provides a method of treating migraine in patients with severe renal impairment, the method comprising administering to a patient having severe renal disease a first dose of 50 mg ubrogepant as described above, and then optionally administering a second 50 mg dose of ubrogepant at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is administered between 2 and 24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides that use of ubrogepant should be avoided in patients with end-stage renal disease (ESRD) (CLcr <15 mL/min).

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in a patient having renal impairment, the method comprising first determining whether the patient has mild renal impairment, moderate renal impairment, severe renal impairment (CLcr 15-29 mL/min) or end-stage renal disease (CLcr< 15 mL/min). In embodiments, if the patient has mild or moderate renal impairment, the method comprises administering 50 or 100 mg ubrogepant to the patient. In embodiments, ubrogepant may be taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken by the patient having mild or moderate renal impairment at least 2 hours after the initial dose. In embodiments, the second dose is taken from 2 to 24 hours after the initial dose. In embodiments, the second dose of ubrogepant is 50 or 100 mg. In embodiments, the maximum dose in a 24 hour period is 200 mg. In embodiments, if the patient has severe renal impairment, the method comprises administering 50 mg ubrogepant to the patient. In embodiments, ubrogepant may be taken orally with or without food. In embodiments, a second dose of ubrogepant may be taken by the patient having severe renal impairment at least two hours after the first dose of ubrogepant. In embodiments, the second dose is administered between 2 and 24 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant administered to the patient having severe renal impairment is a 50 mg dose of ubrogepant. In embodiments, if the patient is determined to have end-stage renal disease, administration of ubrogepant is avoided.

Co-Administration of Ubrogepant With CYP3A4 Inhibitors

Co-administration of ubrogepant with ketoconazole, a strong CYP3A4 inhibitor, resulted in a significant increase in exposure of ubrogepant. Ubrogepant should not be used with strong CYP3A4 inhibitors. Strong CYP3A4 inhibitors include, for example, ketoconazole, itraconazole, or clarithromycin.

Accordingly, in embodiments, the present disclosure provides a method for the acute treatment of migraine, the method comprising administering 50 mg or 100 mg of ubrogepant to a patient in need thereof, wherein if the patient begins concurrent treatment with a strong CYP3A4 inhibitor (e.g., ketoconazole, itraconazole, or clarithromycin), treatment with ubrogepant is discontinued.

“Concurrent” / “concurrently” or “concomitant” / “concomitantly” both include in their meaning (1) simultaneously in time (e.g., at the same time) and (2) at different times but within the course of a common treatment schedule.

Coadministration of ubrogepant with verapamil, a moderate CYP3A4 inhibitor, resulted in an increase in ubrogepant exposure. Dose adjustment is therefore recommended with concomitant use of ubrogepant and moderate CYP3A4 inhibitors. Moderate CYP3A4 inhibitors include, for example, cyclosporine, ciprofloxacin, fluconazole, fluvoxamine, or grapefruit juice.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients undergoing concurrent treatment with a moderate CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing concurrent treatment with a moderate CYP3A4 inhibitor. In embodiments, the CYP3A4 inhibitor may be administered before, concomitantly with, or after the ubrogepant is administered. In embodiments, the maximum daily dose of ubrogepant when administered to patients concomitantly using moderate CYP3A4 inhibitors is 50 mg. That is to say, in patients who have taken a moderate CYP3A4 inhibitor and a first 50 mg dose of ubrogepant, a second dose of ubrogepant is avoided within 24 hours of the first dose of ubrogepant.

In embodiments, the present disclosure provides a method of administering ubrogepant in combination with a moderate CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to a patient taking a moderate CYP3A4 inhibitor. In embodiments, the CYP3A4 is administered before, concurrently with, or after administration of ubrogepant. In embodiments, when a patient has been administered a CYP3A4 inhibitor and a first 50 mg dose of ubrogepant, a second dose of ubrogepant is avoided within 24 hours of the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura, the method comprising administering 50 or 100 mg of ubrogepant to a patient and optionally administering a second 50 or 100 mg dose of ubrogepant between 2 -24 hours after the initial dose of ubrogepant, wherein if the patient begins concurrent therapy with a moderate CYP3A4 inhibitor, the dose of ubrogepant is reduced to 50 mg. In embodiments, the maximum daily dose of ubrogepant after the patient begins treatment with a moderate CYP3A4 inhibitor is 50 mg. That is, in embodiments, only one dose of 50 mg ubrogepant is administered in a 24 hour period in patients taking both ubrogepant and a moderate CYP3A4 inhibitor.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients undergoing concurrent treatment with a mild CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to a patient taking a weak CYP3A4 inhibitor. In embodiments, the weak CYP3A4 inhibitor may be taken before, concurrently with, or after administration of ubrogepant. In embodiments, an optional second dose of 50 mg ubrogepant may be administered more than 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is administered within 2 to 24 hours of the first 50 mg dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura, the method comprising administering 50 or 100 mg of ubrogepant to a patient and optionally administering a second 50 or 100 mg dose of ubrogepant between 2 -24 hours after the initial dose of ubrogepant, wherein if the patient begins concurrent therapy with a weak CYP3A4 inhibitor, the dose of ubrogepant is reduced to 50 mg, and an optional second 50 mg dose of ubrogepant may be administered between 2-24 hours after the first 50 mg dose of ubrogepant.

Co-Administration of Ubrogepant With CYP3A4 Inducers

It has been determined that co-administration of ubrogepant with rifampin, a strong CYP3A4 inducer, resulted in a significant reduction in ubrogepant exposure. Accordingly, ubrogepant should not be used with strong CYP3A4 inducers, as loss of ubrogepant efficacy may result.

In embodiments, the present disclosure provides a method of administering ubrogepant (such as for the acute treatment of migraine with or without aura), the method comprising administering 50 or 100 mg ubrogepant, wherein if the patient begins treatment with a strong CYP3A4 inhibitor, treatment with ubrogepant is discontinued. Strong CYP3A4 inducers include, for example, phenytoin, barbiturates, rifampin, or St. John’s Wort.

Because ubrogepant is considered a sensitive CYP3A4 substrate (i.e., mainly eliminated by CYP3A4 metabolism and strong CYP3A4 inhibition resulted in about 10-fold increase in its exposure), drug interaction with weak or moderate inducers may reduce ubrogepant exposure by 20-50% or 50-80% respectively. Because 50 mg and 100 mg ubrogepant doses are considered safe and effective, the 100 mg dose may be used if concomitant use of a weak or moderate CYP3A4 inducer cannot be avoided.

Accordingly, in embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients taking a moderate or weak CYP3A4 inducer, the method comprising administering 100 mg ubrogepant to the patient undergoing concurrent treatment with a moderate or weak CYP3A4 inducer. In embodiments, the CYP3A4 inducer may be administered before, concomitantly with, or after ubrogepant. In embodiments, an optional second dose of 100 mg ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is administered between 2 and 24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura, the method comprising administering 50 or 100 mg of ubrogepant to a patient in need thereof, and optionally administering a second 50 or 100 mg dose of ubrogepant within 2-24 hours of the first dose of ubrogepant, wherein if the patient begins concurrent treatment with a weak or moderate CYP3A4 inducer, the dose of ubrogepant is increased to 100 mg, and the optional second dose of ubrogepant is increased to 100 mg. In embodiments, the CYP3A4 inducer may be taken before, concurrently with, or after ubrogepant.

Co-Administration of Ubrogepant With BCRP and/or P-gp Only Inhibitors

Ubrogepant is a substrate of BCRP and P-gp transporters in vitro, which creates the potential that use of inhibitors of BCRP and/or P-gp may increase the exposure of ubrogepant. It has been determined based on ADME and clinical interaction studies with CYP3A4 / P-gp inhibitors that show that the highest predicted potential increase in exposure of ubrogepant is not expected to be more than 2-fold.

Accordingly, the present disclosure provides a method for the acute treatment of migraine with or without aura in patients taking a BCRP and/or P-gp only inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing concurrent treatment with the BCRP and/or P-gp only inhibitor. In embodiments, the BCRP and/or P-gp only inhibitor may be administered before, concurrently with, or after ubrogepant. In embodiments, an optional second dose of 50 mg ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose is administered 2-24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method of administering ubrogepant in combination with a BCRP and/or P-gp only inhibitor, the method comprising administering 50 mg ubrogepant to a patient taking a BCRP and/or P-gp only inhibitor. In embodiments, the BCRP and/or P-gp only inhibitor is administered before, concurrently with, or after ubrogepant. In embodiments, a second 50 mg dose of ubrogepant may be administered at least 2 hours after the first dose of ubrogepant. In embodiments, the second dose of ubrogepant is administered between 2-24 hours after the first dose of ubrogepant.

In embodiments, the present disclosure provides a method for the acute treatment of migraine with or without aura, the method comprising administering 50 or 100 mg of ubrogepant to a patient and optionally administering a second 50 or 100 mg dose of ubrogepant between 2 -24 hours after the first dose of ubrogepant, wherein if the patient begins concurrent therapy with a BCRP and/or P-gp only inhibitor, the dose of ubrogepant is adjusted to 50 mg. In embodiments, an optional second 50 mg dose of ubrogepant may be administered between 2-24 hours after the first dose of ubrogepant.

EXAMPLES Example 1

A phase 1, multicenter, open-label, single-dose, non-randomized, parallel-group study was conducted to assess the PK, safety, and tolerability profile of 100 mg ubrogepant in healthy participants with normal hepatic function and patients with impaired hepatic function after a single dose administration. The study was intended to enroll 24 male and female participants with hepatic impairment (8 mildly impaired, 8 moderately impaired, and 8 severely impaired) and 8 healthy male and female participants with normal hepatic function, aged 18 through 75 years, who were matched closely to the age, weight, and gender of the hepatically impaired groups.

Ubrogepant is mainly metabolized by hepatic CYP enzymes, and thus it is likely that patients with varying degrees of hepatic impairment may achieve higher systemic concentrations of ubrogepant. Accordingly, this study characterized the PK profile of ubrogepant in patients with mild, moderate, or severe hepatic impairment as compared to participants with normal hepatic function.

All participants received a single oral dose of 100 mg ubrogepant under fasted conditions on Day 1.

Participants with hepatic impairment were categorized according to the Child-Pugh classification. Participants with moderate hepatic impairment (Child-Pugh B classification) were not enrolled until 4 patients with mild hepatic impairment (Child-Pugh A classification) had completed the study; participants with severe hepatic impairment (Child-Pugh C classification) were not to be enrolled until 4 patients with moderate hepatic impairment had completed the study. Enrollment for the moderate and severe hepatic impairment groups began after the safety/tolerability/PK profile of ubrogepant was established by the medical safety physician and the clinical pharmacologist. Healthy participants with normal hepatic function were recruited after participants with hepatic impairment had been enrolled in the study, in order to match them as closely as possible to the hepatically impaired participants with respect to age, weight, and gender. Participants with normal hepatic function were matched specifically according to age, not to exceed 5 years between the means of the normal group and the 3 hepatically impaired groups. Weight range deviated <20% between the means of the normal group and the 3 hepatically impaired groups; and gender, as much as possible to match the ratio of the normal hepatic function group to the 3 hepatically impaired groups.

The planned duration of each participant’s participation in the study was 4 days (Day -1 through the last PK sample on Day 3), excluding the screening period and 30-day follow-up period.

The study design was chosen in accordance with the requirements of the FDA guidance “Pharmacokinetics in Patients with Impaired Hepatic Function: Study Design, Data Analysis, and Impact on Dosing and Labeling” (U.S. Food and Drug Administration, 2003).

Participants received a single oral dose of 100 mg (2 × 50 mg tablets) of ubrogepant with 240 mL of water at approximately 0800 hours on Day 1 following an overnight fast. Fasting continued for 4 hours after dosing. Because minimal to no accumulation was expected after once daily repeated dosing for ubrogepant, a single-dose study was considered adequate to satisfy the objectives of the present study.

Participants were queried regarding any AEs or SAEs at the time of each vital sign assessment, as well as at each visit through to the follow-up visit.

Study center personnel were required to report any participant who met potential Hy’s Law criteria anytime from the time he or she signed the ICF for the study, until 30 days after the last dose of ubrogepant. Criteria for potential Hy’s Law cases were as follows: AST or ALT ≥ 3 × ULN and Total Bilirubin ≥ 2 × ULN and Alkaline phosphatase < 2 × ULN.

A total of 28 participants (8 participants each in the healthy, mild, and moderate hepatic impairment groups and 4 in the severe hepatic impairment group) were enrolled in the study. Due to challenges finding sufficient participants with severe hepatic impairment, enrollment was stopped after 4 of the planned 8 participants in the group had entered the study. All 28 participants received IP as planned and completed the study. No participant discontinued from the study prematurely.

Demographics and baseline characteristics are summarized in Table 1.

TABLE 1 Summary of Demographic and Baseline Characteristics (Safety Population) Parameter Normal Hepatic Function (n=8) Hepatic Impairment Total N=28 Mild (N=8) Moderate (N=8) Severe (N=4) Age (years) Mean (SD) 58.1 (2.8) 54.0 (8.3) 57.8 (7.6) 57.0 (9.6) 56.7 (6.9) Median 59.5 56.0 58.0 58.0 58.5 Min, Max 54, 61 36,62 45, 70 46, 66 36, 70 Sex, n (%) Male 4 (50.0) 2 (25.0) 5 (62.5) 3 (75.0) 14 (50.0) Female 4 (50.0) 6 (75.0) 3 (37.5) 1 (25.0) 14 (50.0) Race, n (%) White 8 (100.0) 8 (100.0) 6 (75.0) 4 (100.0) 26 (92.9) Black / African American 0 0 1 (12.5) 0 1 (3.6) Multiple 0 0 1 (12.5) 0 1 (3.6) Ethnicity Hispanic or Latino 5 (62.5) 4 (50.0) 5 (62.5) 3 (75.0) 17 (60.7) Not Hispanic or Latino 3 (37.5) 4 (50.0) 3 (37.5) 1 (25.0) 11 (39.3) Weight Mean (SD) 79.41 (8.37) 85.00 (16.82) 85.14 (22.63) 85.75 (8.09) 83.55 (15.45) Median 76.20 86.70 80.75 86.00 80.00 Min, Max 148.0, 182.0 157.0, 172.3 155.5, 176.0 155.0, 182.0 148.0, 182.0 Height Mean (SD) 167.76 (11.15) 164.48 (5.31) 168.50 (6.71) 168.88 (11.05) 167.19 (8.25) Median 166.55 166.25 169.50 169.25 167.50 Min, Max 148.0, 182.0 157.0, 172.3 155.5, 176.0 155.0, 182.0 148.0, 182.0 Body Mass Index (km/m²) Mean (SD) 28.28 (2.35) 31.32 (5.39) 29.94 (7.54) 30.26 (4.05) 29.91 (5.19) Median 28.03 31.86 27.90 29.56 28.81 Min/Max 25.7, 33.3 22.4, 41.3 20.4, 41.6 26.2, 35.8 20.4, 41.6

Participants with hepatic impairment were allowed to continue taking medications prescribed for their hepatic disease or other concurrent diseases common in this population. No concomitant medications were administered to participants with normal hepatic function during the study.

PK sampling was done at the following times to determine ubrogepant plasma concentrations: starting on Day 1 at 0 hour (predose) and 0.5, 1.0, 1.5, 2, 3, 4, 5, 6, 8, 12, 14, 24, 30, 36, and 48 hours post dose. Sampling was also done at the following times for plasma protein binding determinations: Day 1 at 0 hour (predose) and 2 hours post dose.

A summary of the mean PK parameters for ubrogepant when administered to participants with varying degrees of hepatic impairment and in participants with normal hepatic impairment is presented in Table 2.

TABLE 2 Mean (± SD) Ubrogepant Pharmacokinetic Parameters Following Single Dose Oral Administration of Ubrogepant 100 mg in Participants with Mild, Moderate, or Severe Hepatic Impairment and in Participants with Normal Hepatic Function (PK Population) PK Parameter Mild Hepatic Impairment Group Moderate Hepatic Impairment Group Severe Hepatic Impairment Group Normal Hepatic Function Group C_(max) (ng/mL) 411.36 ± 189.51 479.96 ± 188.78 509.27 ± 75.78 405.76 ± 218.89 AUC_(0-t) (ng•h/mL) 1745.23 ± 767.40 2784.87 ± 2021.70 3310.82 ± 704.12 1587.83 ± 529.76 AUC_(0-inf) (ng•h/mL) 1764.09 ± 775.00 2815.22 ± 2056.88 3327.31 ± 704.93 1598.02 ± 532.55 T_(max) (h)^(a) 1.50 (1.00 -2.00) 2.00 (1.00 -3.00) 1.50 (0.50 -2.00) 1.75 (1.00 -4.00) t_(½) (h) 6.56 ± 5.93 5.95 ± 2.68 5.62 ± 0.62 5.60 ± 3.68 V_(z)/F (L) 558.70 ± 358.39 365.19 ± 129.63 248.14 ± 29.93 532.88 ± 319.83 CL/F (L/h) 66.38 ± 26.15 49.78 ± 23.84 31.23 ± 7.49 69.01 ± 23.54 ^(a) Median (min-max)

Participants with mild hepatic impairment had 4% higher C_(max) and 7% higher AUC_(0-∞) when compared to participants with normal hepatic function after administration of a single oral dose of 100 mg ubrogepant. The increase in C_(max) and AUC_(0-∞) was slightly higher in participants with moderate hepatic impairment, with a 25% higher C_(max) and 52% higher AUC_(0-∞). As compared to participants with normal hepatic function, those with severe hepatic impairment showed a significantly higher C_(max) and AUC_(0-∞) of 40% and 115%, respectively.

A summary of comparison of plasma ubrogepant pharmacokinetic parameters following single dose oral administration of 100 mg ubrogepant in participants with mild, moderate, or severe hepatic impairment to participants with normal hepatic function (PK Population) is shown in Table 3.

TABLE 3 Summary of Comparison of Plasma Ubrogepant Pharmacokinetic Parameters Following Single Dose Oral Administration of 100 mg Ubrogepant in Participants with Mild, Moderate, or Severe Hepatic Impairment to Participants with Normal Hepatic Impairment Hepatic Function Group PK Parameter Geometric LSM Ratio of Geometric Means 90% Lower CI 90% Upper CI Test Reference (Normal Hepatic Function) Test / Reference Mild-Impaired Cmax (ng/mL) 375.33 359.86 1.04 0.72 1.51 AUC_(0-t) (ng•h/mL) 1608.58 1512.10 1.06 0.72 1.57 AUC_(0-∞) (ng•h/mL) 1625.33 1522.28 1.07 0.72 1.58 Moderate-Impaired C_(max) (ng/mL) 449.39 359.86 1.25 0.86 1.81 AUC_(0-t) (ng•h/mL) 2299.44 1512.10 1.52 1.03 2.24 AUC_(0-∞) (ng•h/mL) 2319.45 1522.28 1.52 1.03 2.25 Severe-Impaired C_(max) (ng/mL) 505.35 359.86 1.40 0.89 2.21 AUC_(0-t) (ng•h/mL) 3249.97 1512.10 2.15 1.33 3.46 AUC_(0-∞) (ng•h/mL) 3266.51 1522.28 2.15 1.33 3.46

FIGS. 1 and 2 show the mean plasma concentration-time profiles following single oral dose administration of 100 mg ubrogepant in participants with mild, moderate, or severe hepatic impairment and in participants with normal hepatic function (N=8 in each group, N=4 in severe hepatic impairment group). FIG. 1 shows a Linear Scale, and FIG. 2 shows a semilogarithmic scale.

Protein binding blood samples were collected from all participants starting on Day 1 at 0 hour (predose) and at 2 hours post-dose. The pre-dose samples collected prior to dosing for each participants were spiked with known quantities of ubrogepant. Percent bound ubrogepant was determined using equilibrium dialysis in the 2-hour sample.

Percentage of bound ubrogepant is summarized in Table 4. As shown in Table 4, in participants with mild, moderate, and severe hepatic impairment administered a single oral dose of 100 mg ubrogepant, percentage of protein-bound ubrogepant was 89.9%, 88.2%, and 85.3%, respectively, as compared to 89.3% in participants with normal hepatic function. Thus, plasma protein binding was generally similar across the mild and moderate hepatic impairment groups and in participants with normal hepatic function, and somewhat lower in participants with severe hepatic impairment.

TABLE 4 Summary of Ubrogepant Plasma Bound Protein-Binding in Participants with Mild, Moderate, or Severe Hepatic Impairment and in Participants with Normal Hepatic Function Following a Single Dose Oral Administration of 100 mg Ubrogepant (PK Population) Hepatic Function Group 0 hr 2 hr Mild-Impaired 88.87 ± 1.12 89.85 ± 1.33 Moderate-impaired 87.42 ± 1.89 88.24 ± 1.02 Severe-Impaired 84.58 ± 0.91 85.27 ± 0.94 Normal Hepatic Function 88.52 ± 0.84 89.28 ± 1.54

Overall, there was no clinically relevant change in the PK of ubrogepant in participants with mild and moderate hepatic impairment.

The rate (C_(max)) and extent (AUC_(0-∞)) of ubrogepant systemic exposure was significantly higher (40% and 115%, respectively) in participants with severe hepatic impairment compared with participants with normal hepatic function. In participants with moderate hepatic impairment, a 25% higher C_(max) and 52% higher AUC_(0-∞) was observed compared to participants with normal hepatic function. Mean C_(max) and AUC_(0-∞) were slightly higher in participants with mid hepatic impairment compared to participants with normal hepatic function.

Plasma protein binding did not change in participants with mid and moderate hepatic impairment when compared to participants with normal hepatic function but decreased slightly in participants with severe hepatic impairment.

No deaths, SAEs, or withdrawals due to AEs occurred during the study. AEs occurred in a minority of study participants. Table 5 presents a summary of adverse events.

TABLE 5 Overall Summary of Adverse Events (Safety Population) Normal Hepatic Function (N=8) n (%) Hepatic Impairment Mild (n=8) n (%) Moderate (n=8) n (%) Severe (n=4) n (%) Any TEAE 0 3 (37.5) 2 (25.0) 0 Any treatment-related TEAE 0 2 (25.0) 2 (25.0) 0 Any SAE 0 0 0 0 AE leading to study discontinuation 0 0 0 0 Deaths 0 0 0 0

Five participants (17.9%) had TEAEs during the study. The only AE experienced by more than a single participant was headache, in 2 participants.

Table 6 provides an overall summary of adverse events by hepatic function group, system organ class, and preferred term (safety population).

TABLE 6 Overall Summary of Adverse Events by Hepatic Function Group, System Organ Class, and Preferred Term (Safety Population) Normal Hepatic Function (N=8) n (%) Hepatic Impairment Mild (n=8) n (%) Moderate (n=8) n (%) Severe (n=4) n (%) Any TEAE 0 3 (37.5) 2 (25.0) 0 Gastrointestinal Disorders 0 2 (25.0) 0 0 Diarrhoea 0 1 (12.5) 0 0 Dyspepsia 0 1 (12.5) 0 0 Nervous System Disorders 0 1 (12.5) 2 (25.0) 0 Headache 0 1 (12.5) 1 (12.5) 0 Dizziness 0 0 1 (12.5) 0

No deaths, SAEs, or withdrawals due to AE occurred during the study. AEs of mild to moderate intensity occurred in 5 of 28 participants (17.9%) with mild or moderate hepatic impairment. The only AE experienced by more than a single participant was headache, in 2 of 28 participants (7.1%). Both headaches were mild, self-limiting events that resolved within a day and without intervention. There were no clinically relevant changes in laboratory parameters, vital signs, or ECG measurements.

Ubrogepant was well-tolerated in healthy participants and in participants with mild to severe hepatic impairment. The incidence of treatment emergent AEs was low (17.9% overall) with only mild headaches occurring in more than one participant (2 participants total). No deaths, SAEs, or withdrawals due to AEs occurred during the study. There was no indication of worsening tolerance with increasing hepatic impairment.

Example 2

Clinical drug interaction studies were conducted to assess the impact of CYP3A4 modulators on the PK of ubrogepant. In particular, two phase 1, open-label, fixed-sequence, single-center crossover trials enrolled healthy adults to receive ubrogepant 20 mg with/without verapamil 240 mg (a moderate CYP3A4 inhibitor) or ketoconazole 400 mg (a strong CYP3A4 and P-gp inhibitor) (Study A), or ubrogepant 100 mg with / without rifampin 600 mg (a strong CYP3A4 and P-gp inducer) (Study B).

Outcomes included ubrogepant PK parameters (area under plasma concentration-time curve, time 0 through infinity [AUC_(0-∞)], peak plasma concentration [C_(max)]) and safety (Treatment emergent adverse events [TEAEs]). PK parameters were compared between ubrogepant with/without coadministered medications using linear mixed-effects models. C_(max) and AUC_(0-∞) least squares geometric mean ratios (GMR) of ubrogepant with/without coadministration were constructed.

Study A (verapamil and ketoconazole) comprised 3 treatment periods. In period 1, participants received a single oral dose of ubrogepant 20 mg on day 1 (dosed as two 10 mg tablets). Period 2 commenced at least 3 days after period 1 dosing, and participants received oral doses of verapamil 240 mg once daily (QD) for 7 days with a single oral dose of ubrogepant 20 mg coadministered on day 5. In period 3, which started at least 14 days after the last dose of verapamil in period 2, participants received oral doses of ketoconazole 400 mg QD for 5 days with a single dose of ubrogepant administered on day 2. Ubrogepant was administered under fasted conditions.

Study B (rifampin) had two treatment periods. In period 1, participants received a single oral dose of ubrogepant 100 mg on day 1 (dosed as two 50 mg tablets). Period 2 began after a washout of at least 8 days, and participants received an oral dose of rifampin 600 mg QD for 5 days (days 9-13) with a single oral dose of ubrogepant 100 mg coadministered with rifampin 600 mg on day 14. All treatments were received under fasted conditions.

Healthy adults aged 19-50 years for Study A and 18-45 years for Study B were eligible to participate. Participants had to be continuous nonsmokers without nicotine-containing product use for at least 3 months before dosing in Study A or the previous 2 years for Study B. For Study A, participants had to have a body mass index between 18.5 and 32.0 kg / m². For study B, participants had to have a BMI between 18.0 and 30 kg / m². Exclusion criteria for both studies included hypersensitivity to any study drug; exposure to hepatitis B virus, hepatitis C virus, or HIV; or use of any drug or substance known to affect CYP enzymes or P-gp.

Twelve participants enrolled in Study A and 30 enrolled in Study B. In Study A, 11 of 12 participants completed the trial. One participant completed all study procedures except for follow-up (discontinued due to a fatal motor vehicle accident prior to follow-up). Twenty-seven of 30 participants completed study B. Three participants discontinued the trial because of loss to follow up (n=1) and participant decision (n=2). In both studies, most participants were male (58% in Study A, 60% in study B) and most were white (83% in study A, and 87% in study B). The PK and safety analysis sets comprised all 12 participants in Study A and all 30 participants in Study B.

The results of these studies are summarized in Table 7.

TABLE 7 Drug Interactions with CYP3A4 Modulators CYP3A4 Modulator PK Parameter GMR 90% Lower CI 90% Upper CI Verapamil (Moderate inhibitor) C_(max) 2.80 2.48 3.15 AUC_(inf) 3.53 3.32 3.75 Ketoconazole (Strong inhibitor) C_(max) 5.32 4.19 6.76 AUC_(inf) 9.65 7.27 12.81 Rifampin (Strong inducer) C_(max) 0.31 0.27 0.36 AUC_(inf) 0.22 0.20 0.24

Plasma concentration-time profiles of single-dose ubrogepant 20 mg alone and following coadministration with multiple doses of ketoconazole 400 mg (a strong CYP3A4 and P-gp inhibitor) are shown in FIG. 3 . Ketoconazole appeared to have substantially increased the levels of ubrogepant, resulting in a 9.7-fold increase in ubrogepant AUC_(inf) and a 5.3-fold increase in ubrogepant C_(max). Terminal t_(½) of ubrogepant was longer when coadministered with ketoconazole (5.9 hours) compared with ubrogepant administered alone (2.5 hours). PK parameters of ubrogepant alone or coadministered with ketoconazole are shown in Table 8.

TABLE 8 PK Parameters of Ubrogepant alone or coadministered with ketoconazole (n=12) PK Parameter Ubrogepant Ubrogepant + Ketoconazole GMR (90% CI) AUC_(0-∞) ng•h/mL, mean (SD) 213.2 (71.4) 2072.0 (720.0) 9.65 (7.27, 12.81) Cmax, ng/mL, mean (SD) 45.2 (15.0) 240.2 (70.3) 5.32 (4.19, 6.76) T_(max), h, median (range) 2.00 (1.00 - 4.00) 2.50 (1.00 - 8.06) -- Apparent terminal t_(½), h, mean (SD) 2.52 (0.56) 6.00 (1.27) -- AUC_(0-∞), area under the plasma concentration-time curve from time 0 to infinity; C_(max), maximum plasma concentration; GCV, geometric coefficient of variation; GM, geometric least-squares mean; GMR, ratio of geometric least squares mean (ubrogepant + ketoconazole / ubrogepant); PK, pharmacokinetic; SD, standard deviation; t_(½), half-life; t_(max), time to maximum plasma concentration

The plasma concentration-time profiles of single-dose ubrogepant 20 mg following administration alone and co-administered with multiple-dose verapamil 240 mg, a moderate CYP3A4 inhibitor, are shown in FIG. 4 . Moderate CYP3A4 inhibition with verapamil resulted in about 3.5-fold and 2.8-fold increase in AUC_(inf) and C_(max) of ubrogepant, respectively, relative to ubrogepant administered alone. Statistical comparisons of plasma pharmacokinetics of ubrogepant following administration of a single oral dose of 20 mg ubrogepant alone as compared to a single oral dose of 20 mg ubrogepant with multiple oral doses of 240 mg verapamil is provided in Table 9.

TABLE 9 Statistical Comparisons of Plasma Pharmacokinetics of Ubrogepant Following the Administration of a Single Oral Dose of 20 mg Ubrogepant Alone and Following Administration of a Single Oral Dose of 20 mg Ubrogepant with Multiple Oral Doses of 240 mg Verapamil Ubrogepant Pharmacokinetic Parameter Ubrogepant Alone Ubrogepant with Verapamil (test) Ubrogepant with Verapamil / Ubrogepant Alone Pseudo within subject % CV N AM SD N AM SD GMR 90% CI AUC_(0-∞) 12 213.2 71.4 12 742.0 212.7 3.52 (3.32, 3.75) 8.32 C_(max) (ng/mL) 12 45.2 15.0 12 124.8 36.4 2.80 (2.48, 3.15) 16.26 T_(max) (hr) 12 2.00 (1.00, 4.00) 12 2.00 (1.03, 4.00) Apparent terminal t_(½) (hr) 12 2.52 0.56 12 4.29 0.91

The plasma concentration-time profiles of ubrogepant 100 mg alone and following co-administration with rifampin 600 mg (a strong CYP3A4 and P-gp inducer) are shown in FIG. 5 . Co-administration of ubrogepant with rifampin resulted in about 78% reduction in ubrogepant AUC_(inf) and 69% reduction in C_(max) compared to administration of ubrogepant alone. The median t_(max) of ubrogepant was slightly shorter when coadministered with rifampin compared with ubrogepant administered alone (1.5 hours vs. 2.0 hours). Terminal t_(½) of ubrogepant was shorter when coadministered with rifampin (3.0 hours) compared with ubrogepant administered alone (4.4 hours). The PK parameters of ubrogepant alone or co-administered with rifampin are summarized in Table 10.

TABLE 10 PK Parameters of Ubrogepant Alone or Coadministered with Rifampin PK Parameter Ubrogepant Ubrogepant + Rifampin AUC_(0-∞) ng•h/mL, mean (SD) 1908.31 (834.95) 397.13 (144.28) AUC_(0-t) ng•h/mL, mean (SD) 1883.29 (822.98) 395.96 (144.28) C_(max), ng/mL, mean (SD) 415.89 (197.55) 136.07 (96.18) T_(max), h, median (range) 2.00 (1.00 - 4.00) 1.50 (0.50 - 6.00) Apparent terminal t_(½), h, mean (SD) 4.36 (0.75) 3.04 (0.64) V_(z)/F (L) 390.13 ± 173.68 1238.68 ± 486.31 CL/F (L/h) 62.77 ± 28.33 282.87 ± 103.74

AUC_(0-t) = area under the plasma concentration versus time curve from time 0 to time t; AUC_(0-∞) = area under the plasma concentration versus time curve from time 0 to infinity; CL/F = apparent total body clearance of drug from plasma after extravascular administration; C_(max) = maximum plasma drug concentration; PK = pharmacokinetic(s); SD = standard deviation; T_(max) = time of maximum plasma drug concentration; t_(½) = terminal elimination half-life; V_(z)/F = apparent volume of distribution during the terminal phase after extravascular administration.

Results from statistical comparisons including the ratio of geometric means and 90% CI are presented in Table 11. In the comparison of a single dose of ubrogepant 100 mg coadministered with multiple doses of rifampin 600 mg versus a single dose of ubrogepant 100 mg administered alone, ubrogepant AUC_(0-t) and AUC_(0-∞) were 78% lower. Ubrogepant C_(max) was 69% lower when coadministered with rifampin as compared to ubrogepant administered alone.

TABLE 11 Summary of Statistical Analysis Results of Plasma Ubrogepant Pharmacokinetic Parameters following Oral Administration of Rifampin 600 mg in Combination with Ubrogepant 100 mg (Test, n=28) in Comparison with Ubrogepant 100 mg Administered Alone (Reference n=30) in Healthy Adult Participants, PK Population PK Parameter Geometric LSM Ratio of Geometric Means 90% Lower CI 90% Upper CI Test Reference Test/Reference C_(max) (ng/mL) 117.529 375.186 31.33 27.24 36.02 AUC_(0-t) (ng•h/mL) 377.765 1722.896 21.93 19.86 24.21 AUC_(0-∞) (ng•h/mL) 379.033 1745.214 21.72 19.68 23.97 AUC_(0-∞) = area under the plasma concentration versus time curve from time 0 to infinity; AUC_(0-t) = area under the plasma concentration versus time curve from time 0 to time t; CI = confidence interval; C_(max) = maximum plasma drug concentration; LSM = least squares mean; PK = pharmacokinetic(s).

In Study A, a single oral dose of ubrogepant appeared to be safe and generally well tolerated when coadministered with multiple doses of verapamil or ketoconazole in healthy adults. Eleven participants reported a total of 39 TEAEs. Nine TEAEs were considered treatment related, and all were related to verapamil only. Most TEAEs were mild in severity, and the most commonly reported TEAE was headache. One participant had a fatal SAE after dosing but before the follow-up visit (traffic accident) that was considered not related to study intervention. No other SAEs, deaths, or discontinuations due to a TEAE occurred in Study A. Additionally, no participants experienced elevations in serum transaminases or bilirubin greater than or equal to 2-fold ULN, and there were no treatment-related changes in laboratory values, vital signs, or ECG parameters.

In study B, a single oral dose of ubrogepant appeared to be safe and generally well tolerated when coadministered with multiple doses of rifampin. Six of thirty participants reported at least one TEAE during the trial, most commonly headache (4 participants, 13.3%). All TEAEs were considered to be treatment related, and all were mild in severity. No SAEs, deaths, or discontinuations for a TEAE occurred in Study B. Changes from baseline in laboratory values, vital signs, and ECG parameters were not clinically meaningful. A summary of adverse events is set forth in Tables 12 and 13.

TABLE 12 Study B - Adverse Events - Overall Summary (Safety Population) Treatment A: Ubrogepant 100 mg (2 × 50 mg) under fasted conditions -single dose (N=30) n (%) Treatment B: Repeated doses of 600 mg rifampin (2 × 300 mg Rifadin oral capsules), once daily for 5 days on days 9 to 13 under fasted conditions (N=30) n (%) Treatment C:Co-administration of 600 mg rifampin with 100 mg ubrogepant on Day 14 under fasted conditions (N=28) n (%) Total^(d) (N=30) n (%) TEAEs^(a) 4 (13.3) 1 (3.3) 2 (7.1) 6 (20.0) Treatment related TEAEs^(a) 4 (13.3) 1 (3.3) 2 (7.1) 6 (20.0) SAEs^(b) 0 0 0 0 Deaths^(b) 0 0 0 0 AEs leading to discontinuation^(c) 0 0 0 0 AEs = adverse events; SAEs = serious adverse events; TEAEs = treatment-emergent adverse events. a Events that began or worsened on or after treatment date and within 30 days after the treatment end date. b Events that occurred on or after the treatment start date and within 30 days after the treatment end date. c Discontinuation event within treatment period + 30 days after treatment end date. d Total = Participants who took any investigative product (counted only once)

TABLE 13 Study B - Overall summary of Adverse Events by Treatment and by System Organ Class and Preferred Term (Safety Population) System Organ Class^(a) Preferred Term Treatment A: Ubrogepant 100 mg (2 × 50 mg) under fasted conditions -single dose (N=30) n (%) Treatment B: Repeated doses of 600 mg rifampin (2 × 300 mg Rifadin oral capsules), once daily for 5 days on days 9 to 13 under fasted conditions (N=30) n (%) Treatment C: Co-administration of 600 mg rifampin with 100 mg ubrogepant on Day 14 under fasted conditions (N=28) n (%) Total^(b) (N=30) n (%) Any AE 4 (13.3) 1 (3.3) 2 (7.1) 6 (20.0) Gastrointestinal 2 (6.7) 0 2 (7.1) 4 (13.3) Disorders Nausea 0 0 2 (7.1) 2 (6.7) Dry Mouth 1 (3.3) 0 0 1 (3.3) Flatulence 1 (3.3) 0 0 1 (3.3) Nervous System 2 (6.7) 1 (3.3) 1 (3.6) 4 (13.3) Disorders Headache 2 (6.7) 1 (3.3) 1 (3.6) 4 (13.3) AE = adverse event; MedDRA = Medical Dictionary for Regulatory Activities; n = number of participants who had the event; N = number of participants in the safety population a MedDRA version 20.0 b Total = participants who took any investigational product (counted only once)

Systemic exposure of single-dose ubrogepant was increased following coadministration with both verapamil and ketoconazole administered as multiple doses to reach maximal levels of CYP3A4 inhibition. A 3.5 fold increase in ubrogepant exposure (AUC_(0-∞)) was seen with concomitant verapamil, a moderate CYP3A4 inhibitor. Based on these findings, dose modification of ubrogepant is recommended with coadministered with a moderate CYP3A4 inhibitor.

Ketoconazole dose (400 mg) and duration of dosing (administered daily for 2 days before ubrogepant administration) were selected to achieve maximal CYP3A4 inhibition. Exposure of ubrogepant (AUC_(0-∞)) was more than 9 times higher following coadministration with the strong CYP3A4 and P-gp inhibitor ketoconazole. Concomitant use of ubrogepant with strong CYP3A4 inhibitors is contraindicated. The increased exposure of ubrogepant with concomitant verapamil or ketoconazole, together with the increased t_(½), suggest interactions at both first-pass and systemic levels. CYP3A4 is also expressed in the gut wall, and selective inhibition or induction of gut enzymes could affect the bioavailability of orally administered ubrogepant.

In study B, the median ubrogepant T_(max) was similar following administration of ubrogepant alone or in combination with rifampin (2 hours vs. 1.5 hours). The mean apparent terminal t_(½) of ubrogepant was reduced by approximately one hour when ubrogepant was administered in combination with rifampin as compared to ubrogepant administered alone.

The C_(max) and systemic exposure (AUC) of ubrogepant were significantly decreased following coadministration of ubrogepant and rifampin compared with ubrogepant administered alone. In particular, a decrease in ubrogepant exposure (78% decrease in AUC_(0-∞) and 69% decrease in C_(max)) was observed following coadministration with the strong CYP3A4 and P-gp inhibitor rifampin. This decrease in ubrogepant exposure is expected to reduce clinical efficacy, and the concomitant use of strong CYP3A4 inducers with ubrogepant should be avoided. Taken together, these findings suggest CYP3A4 and P-gp transport play important roles in the absorption and elimination of ubrogepant.

A single oral dose of ubrogepant appeared to be safe and generally well-tolerated when coadministered with multiple oral doses of verapamil, ketoconazole, or rifampin in healthy adults.

Example 3

The safety of ubrogepant was evaluated in 3,624 subjects who received at least one dose of ubrogepant. In two randomized, double-blind, placebo-controlled, Ph. 3 trials in adult patients with migraine [Study 1 (NCT02828020) and Study 2 (NCT02867709), a total of 1,439 patients received ubrogepant 50 mg or 100 mg. Of the ubrogepant-treated patients in these two studies, approximately 89% were female, 82% were white, 15% were Black, and 17% were of Hispanic or Latino ethnicity. The mean age at study entry was 41 years (range of 18-75 years).

Study 1 randomized patients to placebo (n=559) or Ubrelvy (ubrogepant) 50 mg (n=556) or 100 mg (n=557). Study 2 randomized patients to placebo (n=563) or Ubrelvy (ubrogepant) 50 mg (n=562). In all studies, patients were instructed to treat a migraine with moderate to severe headache pain intensity. A second dose of study medication (Ubrelvy/ubrogepant or placebo) or the patient’s usual treatment for migraine, was allowed between 2 to 48 hours after the initial treatment for a non-responding or recurrent migraine headache. Up to 23% of patients were taking preventive medications for migraine at baseline. None of these patients were on concomitant preventive medication that act on the CGRP pathway.

The primary efficacy analyses were conducted in patients who treated a migraine with moderate to severe pain. The efficacy of UBRELVY (ubrogepant) was established by an effect on pain freedom at 2 hours post-dose and most bothersome symptom (MBS) freedom at 2 hours post-dose, compared with placebo, for Studies 1 and 2. Pain freedom was defined as a reduction of moderate or severe headache pain to no pain, and MBS freedom was defined as the absence of the self-identified MBS (i.e., photophobia, phonophobia, or nausea). Among patients who selected an MBS, the most commonly selected was photophobia (56%), followed by phonophobia (24%) and nausea (19%).

The migraine efficacy results for Studies 1 and 2 are shown in Table 14. Table 14 also presents the results of the analyses of the percentage of patients achieving pain relief at 2 hours (defined as a reduction in migraine pain from moderate or severe to mild or none) post-dose and the percentage of patients achieving sustained pain freedom between 2 to 24 hours post-dose.

TABLE 14 Migraine Efficacy Endpoints for Study 1 and Study 2 Study 1 Study 2 Ubrelvy (ubrogepant) 50 mg Ubrelvy (ubrogepant) 100 mg Placebo Ubrelvy (ubrogepant) 50 mg Placebo Pain free at 2 hours N 422 448 456 464 456 % Responders 19.2 21.2 11.8 21.8 14.3 Difference from Placebo (%) 7.4 9.4 - 7.5 - ρ value 0.002 <0.001 - 0.007 - Most Bothersome Symptom Free at 2 hours N 420 448 454 465 456 % Responders 38.6 37.7 27.8 38.9 27.4 Difference from Placebo (%) 10.8 9.9 - 11.5 - ρ value <0/001 <0.001 - <0.001 - Pain Relief at 2 hours N 422 448 456 464 456 % Responders 60.7 61.4 49.1 62.7 48.2 ρ value <0.001 <0.001 - <0.001 - Sustained pain freedom at 2-24 hours N 418 441 452 457 451 % Responders 12.7 15.4 8.6 14.4 8.2 ρ value ^(∗)NS 0.002 - 0.005 - ^(∗) Not Statistically Significant (NS

In both studies, the percentage of patients achieving headache pain freedom and MBS freedom 2 hours post dose was significantly greater among patients receiving UBRELVY (ubrogepant) compared to those receiving placebo. The incidence of photophobia and phonophobia was reduced following administration of Ubrogepant at both doses (50 and 100 mg) as compared to placebo.

The percentage of patients achieving migraine pain freedom within 2 hours following treatment in studies 1 and 2 is shown in FIG. 6 . The percentage of patients achieving MBS freedom within 2 hours in Studies 1 and 2 is shown in FIG. 7 .

Long-term safety was assessed in 813 patients, dosing intermittently for up to 1 year in an open-label extension study. Patients were permitted to treat up to 8 migraines per month with ubrogepant. Of these 813 patients, 421 patients were exposed to 50 mg or 100 mg for at least 6 months, and 364 patients were exposed to these doses for at least one year, all of whom treated at least two migraine attacks per month, on average. In that study, 2.5% of patients were withdrawn from ubrogepant because of an adverse reaction. The most common adverse reaction resulting in discontinuation in the long-term safety study was nausea.

Adverse reactions in Studies 1 and 2 are shown in Table 15.

TABLE 15 Adverse Reactions Occurring in at least 2% and at a Frequency Greater than Placebo in Studies 1 and 2 Placebo (N=984) % Ubrogepant 50 mg (N=954) % Ubrogepant 100 mg (N=485) % Nausea 2 2 4 Somnolence (includes the adverse reaction-related terms sedation and fatigue) 1 2 3 Dry Mouth 1 <1 2

Example 4

ACHIEVE I (NCT02828020) and ACHIEVE II (NCT02867709) were pivotal, randomized, double-blind, placebo-controlled, single-attack trials where adults with migraine treated a qualifying migraine of moderate or severe pain intensity with ubrogepant (ACHIEVE 1: 50 mg or 100 mg; ACHIEVE II: 25 mg or 50 mg) or placebo. Participants who completed either trial could be randomized into a 52-week long-term extension (LTE) trial, treating up to 8 migraine attacks per month (any severity) with ubrogepant 100 mg, ubrogepant 50 mg, or usual care. Consistency of treatment was evaluated for pain freedom and pain relief at 2 hours for participants randomized to the ubrogepant 100 mg dose.

Therapeutic gain (TG) was calculated for the ACHIEVE trial and separately for the first 3 attacks of moderate / severe pain intensity treated in the long term extension trial, using placebo data from ACHIEVE. The TG ratio (TGR) was the TG from the LTE divided by the TG in the ACHIEVE trial multiplied by 100. Following consultation with regulatory agencies, a consistency threshold for the TGR of 50% or greater was used for this analysis.

Overall, 1254 participants were randomized in the long term extension trial, with 808 ubrogepant-treated participants included in the modified intent to treat (mITT) population for efficacy analyses (ubrogepant 10 mg, n=407). The rates for 2 hour pain freedom were 13.0% for the ACHIEVE placebo-treated attacks, 21.2% for ACHIEVE ubrogepant 100 mg-treated attacks, and 21.6% (mean across first 3 attacks) for ubrogepant 100 mg treated attack in the LTE trial. The rates for 2-hour pain relief were 48.7% for the ACHIEVE placebo treated attacks, 61.4% for ACHIEVE ubrogepant 100 mg treated attacks, and 68.0% (mean across first three attacks for ubrogepant 100 mg treated attacks in the LTE trial. The population-level TGRs were 104.9% for pain freedom and 152.0% for pain relief for the ubrogepant 100 mg dose group.

Using the TGR, ubrogepant 100 mg demonstrated population-level consistency of treatment effects from the ACHIEVE trials to the first three treated attacks with moderate or severe pain in the LTE trial.

Example 5

A Phase 1, single-center, single dose, open-label, randomized study included a 2-way crossover study to evaluate the effect of a high-fat meal on the oral bioavailability of the 100-mg Ubrelvy (ubrogepant) tablet formulation. The treatments were administered in 1 of 2 sequences in periods 1 and 2 with a washout period of at least 7 days between each treatment.

Eighteen healthy participants with a mean age of 28.4 years (range: 20 to 39 years) were enrolled. The majority of participants were male (14 of 18, 77.8%). Participants were predominantly black or African American (10 of 18, 55.6%), white (7 of 18, 38.9%); and one participant was Asian (5.6%). Mean (SD) weight was 75.99 (12824) kg and mean (SD) BMI was 25.03 (3.290) kg/m². Participants were randomly assigned one of two treatments in 1 of 2 sequences in Periods 1 and 2, with a washout period of at least 7 days between each study treatment.

TABLE 16 Study Sequences Period 1 Period 2 Sequence I Single dose of 100 mg ubrogepant tablet under fed conditions Single dose of 100 mg ubrogepant tablet under fasted conditions Sequence II Single dose of 100 mg ubrogepant tablet under fasted conditions Single dose of 100 mg ubrogepant tablet under fed conditions

Participants in this part of the study had a total of 4 overnight stays per participant (Days -1, 1, 7, and 8). Participants were released from the study center on days 2 and 9, after the 24-hour postdose PK blood draw or after the EOT procedures were completed.

Participants were required to undergo a 10-hour overnight fast on Days -1 and 7 and were randomized to receive the 100-mg ubrogepant tablet formulation on Days 1 and 8, either under fasted conditions or within 30 minutes of starting a high-fat meal. For fed participants, the standardized high-fat (approximately 50% of total caloric content of the meal) and high-calorie (total of approximately 800 to 1000 calories) breakfast derived approximately 150 calories from protein, 250 calories from carbohydrates, and 500 to 600 calories from fat. An example of a high-fat breakfast meal would be 2 eggs fried in butter, 2 strips of bacon, 2 slices of toast with butter, 4 ounces of hash brown potatoes, and 8 ounces of whole milk. Substitutions in this meal could be made as long as the meal provided a similar number of calories from protein, carbohydrates, and fat and had a comparable meal volume and viscosity. Participants who were randomly assigned to receive ubrogepant under fed conditions were required to consume the high-fat, high-calorie breakfast in full. For all participants, no food was allowed for 4 hours following study treatment administration. Water was allowed as desired except for 1 hour before and 1 hour after study treatment administration.

Participants were given appropriate meals on check-in days (Days -1 and 7) based on their check-in time. On dosing days (Days 1 and 8), participants were given a standard lunch, dinner, and snack at approximately 1200, 1800 and 2100 hours, respectively.

While admitted in the study center, participants were provided with standardized low-fat (<20 g) meals, except during 1 period of this part of the study, when the high-fat, high-calorie meal was provided. Meals did not include any xanthine-containing compounds (i.e., caffeine), vegetables from the mustard green family, or grapefruit-containing foods or beverages.

The mean concentration-time profiles for plasma ubrogepant after single-dose administration of the 100 mg tablet under fed and fasted conditions are presented in FIG. 8 (linear scale) and FIG. 9 (semilogarithmic scale). The predose concentrations were below the limits of quantification in each study period for all participants, indicating sufficient washout between treatments. A summary of the PK parameters for ubrogepant after administration of the 100 mg tablet under fed and fasted conditions is presented in Table 17. Geometric mean extent of exposure to plasma ubrogepant (based on AUC_(0-t) and AUC_(0-inf)) was similar after administration of the 100 mg tablet under fed and fasted conditions; however, geometric mean maximum exposure (based on C_(max)) was lower and the median T_(max) was delayed (from 1 to 3 hours) under fed relative to fasted conditions. The mean t_(½) was approximately 5 hours for both treatments.

TABLE 17 Geometric Mean (Geometric CV%) Plasma Ubrogepant Pharmacokinetic Parameters (PK Population) Parameter Fed Ubrogepant 1×100 mg n=17 Fasted Ubrogepant 1×100 mg n=17 AUC_(0-t) (h^(∗)ng/mL) 1318.98 (25.0) 1333.66 (34.9) AUC_(0-inf) (h^(∗)ng/mL) 1344.27 (25.5) 1359.25 (35.1) C_(max) (ng/mL) 262.36 (34.4) 334.37 (36.1) T_(max) ^(a) (h) 3.00 (0.50 - 4.00) 1.00 (1.00 - 3.00) t_(½) (h) 4.64 (11.1) 4.99 (23.0) CL/F^(b) (L/h) 76.55 (24.1) 77.29 (29.9) V_(z)/F^(b) (L) 506.93 (22.7) 535.64 (28.5) ^(a) Median (minimum - maximum) reported for T_(max) ^(b) Arithmetic mean (CV%) reported for t_(½), CL/F, and V_(Z)/F

A summary of the statistical comparisons of ubrogepant PK parameters after administration of the 100 mg tablet formulation under fed compared to fasted conditions is presented in Table 18.

TABLE 18 Summary of the Statistical Comparisons of Plasma Ubrogepant Pharmacokinetic Parameters: 100 mg Formulation under Fed vs. Fasted Conditions (PK Population) Fed Ubrogepant 1 × 100 mg Fasted Ubrogepant 1 × 100 mg GMR^(b,c) (%) 90% CI Intra-CV% Inter-CV% Parameter N GLSM^(a) N GLSM^(a) Lower Upper Fed Fasted AUC_(0-t) (h*ng/mL) 17 1325.33 17 1340.31 98.88 92.613 105.576 10.91^(d) 27.71 AUC_(0-inf) (h*ng/mL) 17 1350.94 17 1366.14 98.89 92.808 105.366 10.56^(d) 28.18 C_(max) (ng/mL) 17 263.15 17 335.70 78.39 65.521 93.784 29.66 31.21% 18.15 T_(max) (h) 17 3.00 17 1.00 2.00 ^(a) Median reported for Tmax ^(b) Median difference (test - reference) reported for T_(max) ^(c) Results for AUC_(0-t) and AUC_(0-inf) provided from models without the repeated statement (allowing for variance of the response to vary across different treatments), as models did not converge ^(d) Although reported in the Fed column, intra-CV% is estimated from the overall model and not for each treatment.

A high fat meal did not affect the extent of exposure to plasma ubrogepant (based on AUC_(0-t) and AUC_(0-inf)) after administration of a single dose of the 100 mg tablet formulation; however, maximum exposure (based on C_(max)) was approximately 22% lower under fed versus fasted conditions. The time to peak exposure (based on T_(max)) after administration of the 100 mg tablet formulation was delayed under fed conditions (with a median difference [fed-fasted] of 2 hours); however, terminal elimination half-life was similar under fed and fasted conditions. Based on the GMR, food lowered maximum ubrogepant exposure by approximately 22% for the 100 mg tablet formulation. Additionally, the median difference (fed - fasted) in T_(max) between treatments was 2 hours, suggesting food delayed time to peak exposure after administration of the 100 mg tablet formulation.

EMBODIMENTS

1. A method for the acute treatment of migraine with or without aura in a patient with severe hepatic impairment, the method comprising administering a first dose of 50 mg of ubrogepant to a patient, wherein the patient has a Child-Pugh score of Child-Pugh Class C.

2. The method of claim 1, further comprising administering a second 50 mg dose of ubrogepant at least 2 hours after the first dose.

3. The method of claim 2, wherein the second dose is taken between 2 and 24 hours after the first dose.

4. A method for the acute treatment of migraine with or without aura in a patient having hepatic impairment, the method comprising:

-   determining whether the patient has mild, moderate, or severe     hepatic impairment; and -   if the patient has mild hepatic impairment, administering 50 mg or     100 mg ubrogepant to the patient; -   if the patient has moderate hepatic impairment, administering 50 mg     or 100 mg ubrogepant to the patient; and -   if the patient has severe hepatic impairment, administering 50 mg     ubrogepant to the patient.

5. The method according to claim 4, further comprising administering a second dose of ubrogepant to the patient at least 2 hours after the first dose, wherein

-   if the patient has mild hepatic impairment, the second dose is 50 mg     or 100 mg ubrogepant, and wherein the maximum dose in a 24 hour     period is 200 mg; -   if the patient has moderate hepatic impairment, the second dose is     50 mg or 100 mg ubrogepant, and wherein the maximum dose in a 24     hour period is 200 mg; and -   if the patient has severe hepatic impairment, the second dose is 50     mg ubrogepant.

6. The method according to claim 5, wherein the second dose of ubrogepant is administered between 2 and 24 hours after the first dose of ubrogepant.

7. A method for the acute treatment of migraine with or without aura in a patient with severe renal impairment, the method comprising administering a first dose of 50 mg ubrogepant to a patient, wherein the patient’s estimated creatinine clearance as determined using the Cockcroft-Gault equation is 15-29 mL/min.

8. The method of claim 7, further comprising administering a second dose of 50 mg of the ubrogepant at least 2 hours after the first dose.

9. The method of claim 8, wherein the second dose is taken between 2 and 24 hours after the first dose of ubrogepant.

10. A method for the acute treatment of migraine with or without aura in a patient having renal impairment, the method comprising:

-   determining whether the patient has mild renal impairment, moderate     renal impairment, severe renal impairment, or end-stage renal     disease; and -   if the patient has mild renal impairment, administering 50 mg or 100     mg ubrogepant to the patient; -   if the patient has moderate renal impairment, administering 50 or     100 mg ubrogepant to the patient; -   if the patient has severe renal impairment, administering 50 mg     ubrogepant to the patient; and -   if the patient has end-stage renal disease, avoiding administration     of ubrogepant to the patient.

11. The method according to claim 10, further comprising administering a second dose of ubrogepant to the patient at least 2 hours after the first dose, wherein

-   if the patient has mild renal impairment, the second dose is 50 mg     or 100 mg ubrogepant, and wherein the maximum dose in a 24-hour     period is 200 mg; -   if the patient has moderate renal impairment, the second dose is 50     mg or 100 mg ubrogepant, and wherein the maximum dose in a 24-hour     period is 200 mg; and -   if the patient has severe renal impairment, the second dose is 50 mg     ubrogepant.

12. A method for the acute treatment of migraine with or without aura in patients undergoing treatment with a moderate CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing treatment with the moderate CYP3A4 inhibitor.

13. The method of claim 12, wherein the maximum amount of ubrogepant administered to the patient in a 24-hour period is 50 mg.

14. The method of claim 12, wherein the moderate CYP3A4 inhibitor is verapamil.

15. The method of claim 12, wherein the moderate CYP3A4 inhibitor is administered before, concurrently with, or after ubrogepant.

16. A method for the acute treatment of migraine with or without aura in a patient in need of treatment, the method comprising administering a first dose of 50 mg or 100 mg ubrogepant to the patient, the method further comprising optionally administering a second dose of 50 mg or 100 mg ubrogepant to the patient at least 2 hours after the first 50 mg or 100 mg ubrogepant, wherein if the patient begins treatment with a moderate CYP3A4 inhibitor, the first dose of ubrogepant is adjusted to 50 mg and the optional second dose of ubrogepant is adjusted to 50 mg.

17. The method according to claim 16, wherein the moderate CYP3A4 inhibitor is verapamil.

18. A method for the acute treatment of migraine with or without aura in a patient undergoing treatment with a weak CYP3A4 inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing treatment with a weak CYP3A4 inhibitor.

19. The method of claim 18, wherein a second 50 mg dose of ubrogepant is administered at least two hours after the first dose of ubrogepant.

20. The method of claim 19, wherein the second 50 mg dose of ubrogepant is administered between 2 and 24 hours after the first 50 mg dose of ubrogepant.

21. The method of claim 18, wherein the weak CYP3A4 inhibitor is administered before, concurrently with, or after ubrogepant.

22. A method for the acute treatment of migraine with or without aura in a patient in need of treatment, the method comprising administering a first dose of 50 mg or 100 mg ubrogepant to the patient, the method further comprising optionally administering a second dose of 50 mg or 100 mg ubrogepant to the patient at least 2 hours after the first 50 mg or 100 mg ubrogepant, wherein if the patient begins treatment with a weak CYP3A4 inhibitor, the first dose of ubrogepant is adjusted to 50 mg and the optional second dose of ubrogepant is adjusted to 50 mg.

23. A method for the acute treatment of migraine with or without aura in a patient undergoing treatment with a weak or moderate CYP3A4 inducer, the method comprising administering 100 mg ubrogepant to the patient undergoing treatment with the weak or moderate CYP3A4 inducer.

24. The method of claim 23, wherein a second dose of ubrogepant is administered at least 2 hours after the first dose of ubrogepant.

25. The method of claim 24, wherein the second dose is administered between 2 and 24 hours after the first dose of ubrogepant.

26. The method of claim 23, wherein the weak or moderate CYP3A4 inducer is administered before, concurrently with, or after ubrogepant.

27. A method for the acute treatment of migraine with or without aura in a patient in need of treatment, the method comprising administering a first dose of 50 mg or 100 mg ubrogepant to the patient, the method further comprising optionally administering a second dose of 50 mg or 100 mg ubrogepant to the patient at least 2 hours after the first 50 mg or 100 mg dose of ubrogepant, wherein if the patient begins treatment with a weak or moderate CYP3A4 inducer, the first dose of ubrogepant is adjusted to 100 mg and the optional second dose of ubrogepant is adjusted to 100 mg.

28. A method for the acute treatment of migraine with or without aura in a patient undergoing concurrent treatment with a BCRP and/or P-gp only inhibitor, the method comprising administering 50 mg ubrogepant to the patient undergoing treatment with a BCRP and/or P-gp only inhibitor.

29. The method of claim 28, wherein a second dose of 50 mg ubrogepant is administered at least 2 hours after the first dose of ubrogepant.

30. The method of claim 29, wherein the second dose of 50 mg ubrogepant is administered between 2-24 hours after the first dose of ubrogepant.

31. The method of claim 28, wherein ubrogepant is administered before, concurrently with, or after the BCRP and/or P-gp only inhibitor.

32. A method for the acute treatment of migraine with or without aura in a patient in need of treatment, the method comprising administering a first dose of 50 mg or 100 mg ubrogepant to the patient, the method further comprising optionally administering a second dose of 50 mg or 100 mg ubrogepant to the patient at least 2 hours after the first 50 mg or 100 mg dose of ubrogepant, wherein if the patient begins treatment with a BCRP and/or P-gp only inhibitor, the first dose of ubrogepant is adjusted to 50 mg and the optional second dose of ubrogepant is adjusted to 50 mg. 

1-19. (canceled)
 20. A method for the acute treatment of migraine with or without aura in a patient with severe renal impairment, the method comprising orally administering 50 mg ubrogepant to the patient, wherein the patient’s estimated creatinine clearance as determined using the Cockcroft-Gault equation is 15-29 mL/min, and wherein the patient’s migraine is safely and effectively treated.
 21. The method of claim 20, comprising orally administering to the patient a second dose of 50 mg of ubrogepant at least 2 hours after the administration of the initial 50 mg of ubrogepant.
 22. The method of claim 21, wherein the second dose is administered to the patient between 2 and 24 hours after the administration of the initial 50 mg of ubrogepant.
 23. The method of claim 20, wherein the patient achieves freedom from at least one migraine symptom within 2 hours after the administration of said ubrogepant. 